Abstract: A novel boiler water treatment agent EWPT-6352 was applied in the boiler system of the 500 kt/a FCC unit in Nanchong Oil Refinery. The application results indicated that EWPT-6352 agent could effectively control the pH value of the boiler water, increased the silica concentration of the boiler water due to concentration , and also reduced the waste discharge rate. At the same time, the steam quality was improved with less Na+ and SiO2 taken along. Good economic and social benefits were obtained with the application of this novel boiler water treatment agent due to energy saving and emission reduction of the boiler system.

Key words: boiler water treatment agent, EWPT-6352, boiler, energy saving and emission reduction